.menu_principal
{
	height: 50px;
	width: 300px;
}

.pagina_area
{
	margin-left: 100px;
	margin-right: 100px;
	width: 600px;
}

.tabelas
{	
	width: 100%;
}

.tabelas_heads
{	
	text-align: left;
	font-weight: bold;	
}